Silicon Dojo - https://www.meetup.com/silicon-dojo-free-technology-education/

00:00 Introduction
11:01 Collision Domains
20:22 Ethernet Cabling
41:43 Network Cards and MAC Addresses
52:53 Ethernet Hardware (Hubs, Bridges, Switches, Routers)
01:09:47 LAN, WAN, MAN, CAN
01:19:23 Final Thoughts